Due to the design, Carter-Weber (the old Carter BBS) carbs are extremely difficult to modify. Also, if you should use these, make sure you have TWO throttle return springs on the unit, and check them daily.

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop